Folding carton



y 1952 A. J. WEISS 2,598,627

FOLDING CARTON Filed 001:. 11, 1949 2 SHEETS SHEET l E Z INVENTOR.

fl tizurcl 21/121,525

May 27, 1952 A. J. WEISS 2,598,527

FOLDING CARTON Filed Oct. 11, 1949 2 SHEETS-SHEET 2 IN V EN TOR. flr /aa' cl Melisa Patented May 27, 1952 FOLDING CARTON Arthur J. Weiss, West Englewood, N. J assign-or to Robert Gair Company, Inc., New York, N. Y., a corporation of Delaware Application October 11, 1949, Serial No. 120,798

2 Claims.

The invention relates to folding cartons.

Summary My invention comprises, in its general ar- 'r'an'gement, a folding carton having triangular bottom and cover sections hinged together, the cover having side walls which (when the carton is closed) overlap-the side walls of the bottom, the side walls of each section being pre-glued or otherwise pre-joined at a corner, and a diagonal fold line at each such corner whereby the carton can be folded fiat. When so folded, the bottom and cover sections lie in a single plane so as to present a substantially rectangular outline. Thus, in one form of my invention, a square fiat folded blank converts into a triangular carton by merely lifting the side Walls. Many triangular carton heretofore designed either would not fold flat, or could not be set up without a separate corner-fastening operation. It has been an object of my invention to devise an improved carton of triangular form which will not only fold flat, but which also can be set up without a separate corner-fastening operation.

Description carton as set up for use, and with the cover closed.

Referring first to Fig. 1, the carton blank comprises a triangular bottom panel 5 and a triangular cover panel 6 joined together by a rectangular wall panel 1 along parallel fold lines 8, 9, and two other Wall panels Ill, II and l2, l3 joined to the remainin edges of the bottom and cover panels respectively, along fold lines l4, I5 and I6, I! having intersections at what is to be a corner of the carton. Wall panels II and I3 have foldable extensions l8 and I9 respectively, joined thereto along fold line 20 and 2| and secured to the respective adjoining Wall panels I8 and [2 to form the corner of the carton. Diagonal fold lines 22 and 23 in wall panels [0 and I2, respectively, extend from each of said intersections and define triangular folding sections 24, 25 arranged to lie adjacent portions of the adjoining wall panels when they are folded against the bottom and cover panels respectively.

2 Wall panels Ill and H associated with the triangular bottom panel 5, have extending flaps 25, 21, respectively, joined thereto at fold lines 23 and 29 and which are arranged to tuck in behind the rectangular wall panel 'I when the carton is set up for use.

If desired, the carton may be formed with a window opening 30 extending into the cover panel 6 and wall panel I. The window can be covered with a piece of cellophane or other transparent material 3| adhesively secured to the inside of the blank around the edges of the window.

Triangular sections 24 and 2'5 are glued or otherwise secured to the foldable extensions I 8 and I9 to complete the formation of the folding carton. That is, the corners of the carton are glued or otherwise fastened toegther before the carton is set up for use.

As stated in the summary, many triangular cartons heretofore designed either do not fold flat or cannot be set up without a separate corner-fastening operation. However, in accordance with my invention, and as will more fully appear from a comparison of Figs. 2 and 3, my improved carton of triangular form not only folds flat but also can be set up without a separate corner-fastening operation. The square flat folded blank shown in Fig. 3 converts into a triangular carton by merely lifting the side walls into the position shown in Fig. 2. Therefore it is only necessary to fold the tuck flaps 26 and 21 inwardly and, with the contents of the box of the carton in place, fold down the cover. The resulting carton is generally of the form of a triangular prism, having bottom and cover sections hinged together, the cover having side walls which overlap the side walls of the bottom, the side walls of each section being pre-joined at a corner, with a diagonal fold line at each such corner whereby the carton can be folded flat.

The terms and expressions which I have employed are used in a descriptive and not a limiting sense, and I have no intention of excluding such equivalents of the invention described, or of portions thereof, as fall within the purview of the claims.

I claim:

1. A pre-glued folding carton collapsible into fiat folded form, comprising triangular bottom and cover panels joined together by a rectangular wall panel, said rectangular Wall panel being connected to corresponding edges of the bottom and cover panels along parallel fold lines, two other wall panels joined to the remaining edges of each of the bottom and cover panels respectively along fold lines having intersections at overlapping corners of the bottom and cover of the closed carton, said wall panels being of substantially the same height, one of said other wall panels joined to the bottom panel having a substantially rectangular foldable extension adhesively secured to the adjoining wall panel to form the corner of the carton, and a diagonal fold line in said adjoining wall panel extending from the corner intersection and defining a trijangular folding section to which said foldable extension is adhesively secured, and forming the sole connection between the foldable extension and said adjoining wall panel whereby said wall panels of the bottom will collapse onto the bottom panel in flat condition, the wall panels of said cover being similarly joined at their adjacent ends for collapsing onto the cover panel when said carton is in collapsed condition.

2. A pre-glued folding carton collapsible into flat folded form, comprising triangular bottom and cover panels joined together by a'rectangular wall panel, said rectangular wall panel being connected to corresponding edges of the bottom and cover panels along parallel fold lines, two other wall panels joined to the remaining edges of each of the bottom and cover panels respectively along fold lines having intersections at overlapping corners of the bottom and cover of the closed carton, said wall panels being of substantially the same height, one of said other wall panels joined to the bottom panel having a substantially rectangular foldable extension adhesively secured to the adjoining wall panel to form the corner of the carton, and a diagonal fold line in said adjoining wall panel extending from the corner intersection and defining a triangular folding section to which said foldable extension is adhesively secured, and forming the sole connection between the foldable extension and said adjoining wall panel whereby said wall panels of the bottom will collapse onto the bottom panel in fiat condition, the wall panels of said cover being similarly joined at their adjacent ends for collapsing onto the cover panel when said carton is in collapsed condition and two of said other panels having extending flaps arranged to-tuck in behind said rectangular wall panel when the carton is set up.

ARTHUR J. WEISS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,716,975 Phillips June 11, 1929 1,978,396 Ardavanls Oct. 30, 1934 2,301,927 Brogden Nov. 17, 1942 2,334,902 Buttery Nov. 23, 1943 2,409,736 Caimi Oct. 22, 1946 FOREIGN PATENTS Number Country Date 56,206 Norway -2. Feb. 17', 1936 

